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United States Patent | 5,517,558 |
Schalk | May 14, 1996 |
The present invention describes a system and method for enabling a caller to obtain access to services via a telephone network by entering a spoken first character string having a plurality of digits. Preferably, the method includes the steps of prompting the caller to speak the first character string beginning with a first digit and ending with a last digit thereof, recognizing each spoken digit of the first character string using a speaker-independent voice recognition algorithm, and then following entry of the last digit of the first string, initially verifying the caller's identity using a voice verification algorithm. After initial verification, the caller is again prompted to enter a second character string, which must also be recognized before access is effected.
Inventors: | Schalk; Thomas B. (Dallas, TX) |
Assignee: | Voice Control Systems, Inc. (Dallas, TX) |
Appl. No.: | 125072 |
Filed: | September 21, 1993 |
Current U.S. Class: | 379/88.02; 379/88.04; 379/88.25; 379/189; 379/199; 704/246; 704/251 |
Intern'l Class: | G10L 009/08; H04M 001/64; H04M 001/66 |
Field of Search: | 379/88,91,89,188,189,199,95 381/42,43 |
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4363102 | Dec., 1982 | Holmgren et al. | 395/2. |
4694493 | Sep., 1987 | Sakoe | 381/42. |
4757525 | Jul., 1988 | Matthews et al. | 379/89. |
4827518 | May., 1989 | Feustel et al. | 381/42. |
4850005 | Jul., 1989 | Hashimoto | 379/51. |
4853953 | Aug., 1989 | Fujisaki | 379/88. |
4910782 | Mar., 1990 | Watari | 381/42. |
4959855 | Sep., 1990 | Daudelin | 379/213. |
5127043 | Jun., 1992 | Hunt et al. | 379/88. |
5181238 | Jan., 1993 | Medamana et al. | 379/95. |
5267299 | Nov., 1993 | Nomura | 379/88. |
5274695 | Dec., 1993 | Green | 379/88. |
5297194 | Mar., 1994 | Hunt et al. | 379/88. |
Foreign Patent Documents | |||
8910612 | Nov., 1989 | WO. |
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